Whilst still on the caravan holiday, Barry gets a call from the Duck Watchers Association, of which he is a member. A cash prize will be given the person who photographs the rarely-seen yellow-backed botty wiggler and Barry is up at the crack of dawn with his camera. Needless to say, greedy Paul wants a share and follows him but their efforts, involving a decoy duck hat and a boat that sinks, are initially unproductive. An irate old man telling them they are on private land is no help either. Then, the duck is spotted and the photo taken,but a surprise awaits them when they take it to claim their prize.